Most of the energy used by living things comes either directly or indirectly from where?
- Correct Answer: sun
- earth
- water
- horizon
Explanation: Most of the energy used by living things comes either directly or indirectly from the sun. Sunlight provides the energy for photosynthesis . This is the process in which plants and certain other organisms (see Figure below ) synthesize glucose (C 6 H 12 O 6 ). The process uses carbon dioxide and water and also produces oxygen. The overall chemical equation for photosynthesis is:.
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